Four chemical elements have been
formally added to the periodic table,
completing the scheme’s seventh row. They are the first to be included in the table since 2011, when elements 114 and 116 were added. The first trip true iteration of the table was produced in 1869 by the Russian chemist Dmitri Mendeleev.
The new additions were formally
verified by the International Union
of Pure and Applied Chemistry
(IUPAC) on 30 December 2015.
The body announced that a team of
Russian and American researchers
had provided sufficient evidence to
claim the discovery of elements 115,
117 and 118.
IUPAC awarded credit for the
discovery of element 113 to a
Japanese team at the Riken Institute.
The teams responsible for the
discoveries have been invited to
come up with permanent names and
chemical symbols for the now-
confirmed elements.
“The chemistry community is eager
to see its most cherished table finally
being completed down to the seventh row. IUPAC has now initiated the process of formalising names and symbols for these elements,” said Prof Jan Reedijk, president of the inorganic chemistry division of
IUPAC.
New elements can be named after a
mythological concept, a mineral, a
place or country, a property or a
scientist.
After the responsible IUPAC division
accepts the new names and two-letter symbols, they will be presented for public review for five months.
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